Method Detail

getSeriesExpression

the expression of the series name. The value of this expression can be any
java.lang.Comparable object.
Note that this expression may return different values with each iteration, which in turn
will result in the dataset having multiple category series, even though a single
<categorySeries> tag was used inside <categoryDataset>. However, this
expression usually returns a java.lang.String constant, and there are several
<categorySeries> tags that introduce multiple category series in the dataset.